Secret Message Poster
overview
we love this *spy* inspired poster for its clever use of color to reveal a secret code!
30 minutes
maker checklist
- poster board
- markers
- scratch paper
- red acetate gel (or DIY!)
- magnifying template
- scissors + glue
instructions
make your spy-glass
1
sketch a simple spy glass on heavy paper and cut it out. cut out the inside too!
2
cut a circle of red acetate to fit the opening for the “glass” in your spy glass!
or try this!
use clear acetate or plastic film (like the clear panel from a pasta box!) and color it evenly with a red sharpie. voila! once you’ve created your red filter, cut it to shape.
make your poster!
1
test your markers to see which colors are visible with your acetate and which ones are not. just make some marks on a piece of white paper, and lay the acetate on top of it.
tip!
the red acetate cancels out the warm colors, leaving cool colors visible.
2
write your message with the marker color that stays visible. leave lots of spaces between your letters.
3
fill the spaces with random letters in the colors that disappear.
3
hang the spy-glass from your poster by a string, so friends can discover your secret message!
